Lactulose Dosage for Hepatic Encephalopathy
The initial dose of lactulose for hepatic encephalopathy is typically 30 to 45 milliliters (mL) every one to two hours until a bowel movement is achieved. The dosage is then adjusted to produce two to three soft bowel movements per day [1].
How is Lactulose Administered?
Lactulose can be administered orally or rectally. Oral administration involves taking the liquid form by mouth. For rectal administration, lactulose is given as an enema. This method may be used if a patient is unable to take oral medications [1].
What is the Goal of Lactulose Treatment?
The goal of lactulose treatment is to reduce the amount of ammonia in the blood. Hepatic encephalopathy occurs when the liver cannot effectively remove toxins, such as ammonia, from the body. Lactulose works by drawing ammonia from the blood into the colon, where it is then eliminated from the body through bowel movements [1].
How Does Lactulose Work?
Lactulose is a synthetic sugar that is not absorbed in the small intestine. When it reaches the colon, it is fermented by bacteria into organic acids. This acidification of the colon traps ammonia, converting it to ammonium, which is then excreted [1].
What is Hepatic Encephalopathy?
Hepatic encephalopathy is a neurological complication of liver disease. It is characterized by a spectrum of neuropsychiatric abnormalities, ranging from subtle changes in personality and intellect to severe confusion, stupor, and coma. It is often associated with conditions such as cirrhosis [1].
Are There Alternatives to Lactulose for Hepatic Encephalopathy?
Rifaximin is another medication used to treat hepatic encephalopathy. It is an antibiotic that reduces the production of ammonia-producing bacteria in the gut. It is often used in combination with lactulose [2].
What are the Side Effects of Lactulose?
Common side effects of lactulose include bloating, gas, abdominal cramps, and diarrhea [1]. These side effects are usually manageable by adjusting the dosage.
When Does Lactulose Patent Expire?
Information regarding specific patent expiration dates for lactulose is not readily available through DrugPatentWatch.com. However, lactulose is a well-established medication, and its original patents have long since expired, making it available as a generic drug [3].
Sources
1. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
2. DrugPatentWatch.com
3. Uptodate